鉄てつ面めん皮ぴ

noun, na-adjective, noun which may take the genitive case particle 'no'

shamelessness; brazenness; impudence; nerve

Describes a person who is utterly unashamed, thick-skinned, or brazen in the face of criticism. Often used in set phrases like 鉄面皮な態度 or 鉄面皮にもほどがある.

• 彼かれの鉄てつ面めん皮ぴな態たい度どにはあきれてしまった。

  I was appalled by his shameless attitude.

• あんな失しっ敗ぱいをしておいて平へい然ぜんとしているなんて、鉄てつ面めん皮ぴにもほどがある。

  To act so nonchalant after such a failure—there's a limit to how brazen you can be.